How watertight seals maximise performance in offshore and wind

A water tight seal is used across several industries to prevent applications exposed to water or moisture, used to transport potentially hazardous fluids or to seal joints, structures and machinery. Whilst commonly found in leisure and construction to protect internal structures from water or oil and gas and aerospace to transport fluids, watertight seals play a critical role in maximising performance in the offshore and wind energy industry.

At Aquaseal Rubber, we produce watertight seals and other rubber seals for all industries. Choosing the right material for a water tight seal used in offshore and wind energy applications is critical. Whether you’re stuck between selecting EPDM or nitrile watertight seals for offshore applications, another type of rubber material or if you already have your bespoke requirements ready, our team is here to support your next project.

Our essential guide to offshore rubber includes details of everything you need to know about selecting the right rubber for your offshore applications to maximise the performance of your application.

What are watertight seals used for in the offshore and wind industry?

In offshore and wind energy applications, watertight seals play a critical role in preventing water ingress, protecting sensitive equipment and maintaining the overall reliability of systems operating in harsh marine and outdoor environments.

They are an incredibly vital component for sectors where equipment is constantly exposed to saltwater, humidity, pressure fluctuations and extreme weather, with effective sealing essential for safety and long-term performance.

Protective equipment

A bespoke water tight seal can be used in protective equipment for housings and enclosures, electrical cabinets and junction boxes, safety equipment and access panels, and hydraulic protection systems.

They prevent seawater, moisture and contaminants from entering critical systems whilst protecting sensitive electronics from corrosion and short-circuiting. This helps maintain the safe operation of offshore applications, where equipment failure can have major operational and safety consequences.

Some of the benefits of using watertight seals in protective equipment include an improved equipment lifespan, reduced corrosion risk, greater reliability in harsh offshore conditions and lower maintenance requirements.

Wind turbines

In the offshore and wind energy industry, wind turbines operate with continuous exposure to rain, humidity, offshore salt spray and temperature fluctuations. Watertight seals are used in wind turbines for gearboxes, blade bearing systems, nacelles, generator housings and cable entry points and electrical enclosures to prevent water ingress that could damage critical internal mechanical and electrical systems.

A bespoke water tight seal in wind turbines can protect lubrication systems from contamination, reduce wear in bearings and rotating components, prevent corrosion inside turbine housings and minimise downtime and costly maintenance visits.

Polyurethane plastic is often chosen as an alternative to rubber materials for watertight seals in wind turbines because it has strong abrasion resistance, flexibility under dynamic loads and good resistance to water and harsh environmental exposure, ultimately leading to a long service life in demanding conditions.

Operating systems

Watertight seals are commonly found in operating systems, including transportation pipes, used for fluid transfer, hydraulic and pneumatic systems, valves and pump assemblies and subsea transportation pipelines.

In offshore and wind energy systems, a water tight seal will prevent fluids, gases or chemicals leaking during operation, protect systems from external water ingress that could compromise pressure or performance and are essential for maintaining operational efficiency and environmental safety.

The key benefits of using watertight seals in these operating systems include maintaining pressure integrity within systems, reducing contamination risk, supporting the safe transportation of oil, gas, water and hydraulic fluids, and helping systems withstand high-pressure and corrosive offshore environments.

As one of the most critical components in offshore and wind energy applications, a water tight seal is used to address a range of challenges faced in this industry. By implementing bespoke watertight seals from Aquaseal Rubber, your application can experience optimal, long-term performance, since these rubber seals can address corrosion, leakage and contamination, structural integrity, motion and vibrations, cable and pipe penetration and thermal expansion.

What material is best for your water tight seal?

Different rubber materials are better suited for watertight seals depending on the operating environment, exposure conditions and mechanical demands. In the offshore and wind energy industry, seals must withstand moisture, saltwater, temperature fluctuations, abrasion and exposure to oils or chemicals, so therefore, can be made from a range of materials.

These ideal materials include:

• Nitrile rubber: often found in hydraulic sealing systems, pipe seals and gaskets and fuel and oil handling systems because it is resistant to oils, fuels and hydraulic fluids, has a good compression set and performs well even in demanding environments.
• Natural rubber: used for vibration dampening seals, flexible protective components and general sealing in lower chemical exposure environments because it has outstanding elasticity and flexibility, strong tear and abrasion resistance and performs well in applications with repeated movement or vibration.
• Neoprene: typically applied in marine sealing systems, external weatherproof seals and in cable protection and enclosure seals, neoprene is resistant to water, saltwater and weathering as well as ozone and UV exposure, and maintains performance in outdoor and marine environments.
• EPDM: used in outdoor sealing applications, turbine enclosure seals and weatherproof gaskets and seals, EPDM has exceptional resistance to water, steam, UV and ozone, and performs well across a wide temperature range.
• SBR: with good abrasion and wear resistance and strong performance in general-purpose sealing applications, SBR is found in protective sealing components, low-to-medium performance watertight seals and industrial wear applications.

With each rubber material offering different strengths depending on the operating conditions, it is important to discuss your requirements with expert rubber manufacturers UK and global businesses choose to support their bespoke rubber projects, like our team at Aquaseal Rubber.

Inspecting watertight seals for damage

To maximise performance of any water tight seal in offshore and wind energy applications, regular inspection and maintenance is crucial.

Inspecting watertight seals for damage can consist of a visual inspection focused on looking for signs of water ingress or degradation, performing leak testing where applicable and monitoring environmental exposure.

It is important to act when damaged seals are first identified, instead of waiting until failure occurs.

Aquaseal Rubber provide bespoke watertight seals

At Aquaseal Rubber, we provide everything from critical seals for offshore wind farms in the UK and abroad to water tight seal solutions for marine vessels. We can also manufacture rubber seals for other industries, like nitrile watertight seals in oil and gas and silicone seals for engine gaskets in aerospace applications.

Contact us to see how our team can support your offshore and wind energy industry project by providing a bespoke water tight seal in any quantity.